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Coordination Number

44. In a unit...

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44. In a unit cell,atomsA,B,CandD are present at half of total corners,all face centers,body centre and one third of all edge centers respectively.Then formula of unit cell is

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Q. In a unit cell, atoms A, B, C and D are present at half of total corners, all face-centres, body-centre and one third of all edge-centres respectively. Then formula of unit cell is ?

Q. A compund has a cubical unit cell in which A atoms are present at face center(s) and body centre. B atoms are present at 4 corners and at one-sixth of the edge centers . The simplest formula for the compound is :

In a unit cell, atoms A are present at all corner lattices, B atoms are present at alternate faces and all edge centers. Atoms C is present at face centers left from B and one at each body diagonal at a distance of

\frac{1}{4}

th of body diagonal from the corner.

The formula of the given solid is :

Q. Find the lowest possible empirical formula in an arrangement of unit cell where A atoms are present at corners and alternate face centers, B atoms are present at alternate edge centres and C atoms are present at half of the mid of line joining opposite face centers. Assume: Any atom present in the inner locations of the unit cell should be considered completely within the unit cell structure.

Q. In a unit cell, atoms

A, B, C

D

are present at corners, face-centres, body-centre and edge-centres respectively. If atoms touching one of the plane passing through two diagonally opposite edges are removed, then formula of compound is:

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